First of all, what a wonderful thread! Father, I have very much enjoyed following the progress of your Norinco project thru all 39 pages of this thread (which I have spent most of the day reading). Thanks for posting all of that wonderful stuff! Here in the US, you don't hear much about the NS-522 these days, since they came out here in 1996 or so. Back in those days, they were much discussed on the interwebz, but many of those old threads have disappeared, and not too much new is being said about them here. "Archer Sam" provided a link to this fine site over on RimFire Central, and so here I am. One tip I've found in my research on these fine rifles concerns the trigger spring. Quite a few people in the US have fashioned a lighter replacement trigger spring from an appropiately sized safety pin. Just cut off the big end and bend to the same shape as the original spring. Anyway, a big "Howdy" to all you canadian gun nutz, and I hope you will keep this conversation going!